Sash lock for casement sash



Nov.y 11, 1930. S. MADSEN 1,781,468

sAsH LOCK FOR CASEMENT sAsH Filed Feb. 18, 1929 Patented Nov. 11, 193e`i* UNITED STATES PATENT otEicE v y y SEEN'r MADSEN, 0F CLINTON, IOWA,ASSIGNOB TO CURTIS` COMPANIES, INCORPO- i` RATED, E CLLNTON, Iowa sAsHLoox non onsEMENT sAsH Application fdedFebruary 18,` 1929. Serial Noi.340,967.`

The object of this inventionis to provide `anlimproved locking devicefor Casement :sas 'A i u i y v i A further object of the invention is to5 provide an improved sash lock, which is oper- 'ableirom .the interiorof a buildingand is provided; with twoI coactingparts adapted forinterengagement for drawing and holding a swinging or easement sash inclosed posi- Another object of `theinvention is to pro- `vide a easementsash lock which may be operated by means of `a rotatable wrench capableof being inserted through an opening in 1,15 a screen located interiorlyof the'sash.

`Still another object of the invention is to 1 provide a`lock:orcasementsash, which is simple and economical to produce andetlicient `in operation.

, 20 With these and other objects in view myr illustrated in theaccompanying drawings, in-

which: p M 1 Flgure l 1s a hor1zontallsect1on through a wmdow `iframehavmga easement sa-sh and 130 a screen mounted therein and equipped withy my improved locking device, a crank-operated wrench being shown inthis view-` Figure 2 is a detail horizontal section illustrating one ofthe locks in position for prac- .,35 ticaluse for holding the sash .inclosed posi-` tion, a headed wrench being illustrated' in this Y L1`view. .i i i 1 A y v"Figure B is a vertical section on the lineoFigureQ. i Figure 4. is a perspective view illustrating the variousparts of `the lool; detached from each other prior to installation. L A

- Figure 5 is a perspective v1 Y gshown in Figure 4f.

,wsa-sh A- isprovided with stiles 412 and; 13 and `often provided withmechanical devices for Y ew of the hous-` sino'employed, romthe oppositeend to that acent to` the tree marginalportion of a case- .the stile 12is hingedly connected to the j amb by means of hinges 14, while thestile 13 is adapted to l'it into an outwardly opening rabbet 15in thejamb 11.

n In connection with easement windows it 1s quite customary to mountwindow screens interiorly of the sash, or` in other words, in rabbets orseats formed at the inner margins of the jambs 10 and 11, as shown. Ihave here shown a screen B mounted in the window frame, said screenincluding Stiles 16 and 17 spaced inwardly from the Stiles of the sash.;e

Casement sash of the type in question are adjusting and holding them toany desired degree of opening and some oi' such adjusting devices areoperable `through a screen suchasB. v f

\ However, difficulty has been encountered in drawing the sash toatightly closed position, particularly when the sash stiles are somewhatwarped or where they titso closely asto bind in their seats or in caseswhere snugly fitting weather stripping is employed. y Furthermore, ininstallations where a screen such as B is mounted interiorly of the sashA, it is frequently necessary to unfasten and open the screen in orderto get at the locking devices. This not only requires considerable timeandtrouble, but also permits the entrance of iies and insects to thebuilding and is apt to result in tearing, wrinkling, or otherwisedisturbing lace curtains, drapes, or shades, which may be mounted on they window.` C

It is to overcome these diiculties that I have designed my improvedlocking device, which is operable through a screen such as B from theinterior of thebuilding and is capable of engaging a sash such as A,andvdrawing it in to tightly closed position and holding it in suchposition. This operation preferably is carried out through the use of awrench or similartool adapted to be inserted through an openingin thescreen frame.

ln theexercise ot' my invention I employ a housing 18, which is4 adaptedto be mounted on the face of a jamb membersuch as 11 adlment sash suchas A. The housing 18 be held in place by means of screws 19 extendedthrough'apertured ears 20. Y

The housing 18 i's formed with a longitudinal bore 21 arrangedhorizontally and thev outer end portion of said bore is restricted in vdiameter by means of a shoulder 22.

A screw bolt 231s provided and is formed with relatively ruggedor coarsethreads and 2O adapted to be rotated 'by means ofa wrench ltion to theshape of the socket.

The wrench 27 isadapted to be inserted 25 through a bore 29 in the rail17 of the screen B tor engagement with the socket of the screw bolt. e yY Any suitable meansmay be employed for Vmanuallyturning the wrench27'and for this "so,

purpose l have shown, in Figures 2, 3 and A, a `liattened head 30V onthe outer end ofthe wrench. Y' .y In Fig'ureil, is shown awrench havinga crank 31 on its end Vrfor rotating it. v Y

The housing 18-hasa relatively liat'f face adapted to contact with theface ofthejamlo 11 and this faceisor1ned with longitudinal recess 32preferably terminating ina rabbet i 33 in the outer end portion of thehousing.

A keeper plate 34 isy provided, which is adapted to be mountedintherrecess 32 ofthe vhousing before the housing is installed and said keeperplate `has Vat its outer end, a short i nange 35 adapted to engage inthe rabbet 33.

f At. itsopposite end the leeperplate 34 is corresponds in4 shape tothecross 4sectional shape Aoli the housing V18. The 'liange 36 '1sadapted to oontact'withthe inner zender" the .housing 18 vand isformed'withal circular opening 37 in alignment with the -bore 21thereof. 'l

The keeper plate 3e from. Y The lflange 36 of the lreeper plate servesto v the Vhousing as itsopening'37 isoic lessfdiam 60,' eter than thehead 25 of the bolt and` yet, sut

n'ciently large to 'permitthe entrance of the angular portion 28 of thewrench ory operatk'ving tool. Y Y y1 Y `On thestile 13 of the sash A,Vorin other words, onL the stile which is'free' relative toV withanattenuated'outer endk portion 274.11; The screw bolt 23 is formedlwith a 'cylinf or similartool 27 having at .one end, an an gnlarportion 28 corresponding in cross sec-v formedfwithna flange v36, whichpreferablyv is held place'in the-v recess 32`ot the housing and itsflanges 35 and 36A prevent accidental displacement therepreventwithdrawal of the screw bolt-@from i.

the window trame, is mounted a nut member 38, which is formed withv aninternally threaded bore Y39 adapted to "receivethe threaded portion ofthe screw bolt. Y

The nut lmember 38'may be heldin place on the stile 13 by .means ofscrews and the stile preferably is formed with a recess Ll1l back ofsaid nut member to receive the end kof thescrew bolt 23. Y Y lf desired,fan apertnred faceplatel 4t2 may be vmountedover the bore 29 of thescreen stile 17 to giveit a iinished appearance.

` When a easement sash is equipped with my improved Vlocking device, thenut member 38 may be caused to be engaged by the screw -bolt`23 beforethe sashfhas kbeenfdraw'n to u tightly closed position, as illustratedin Fig-` ure 1. VThis 'is accomplished by vinserting the' tool or wrench'27.throughfthe bore oli" the screen, causing its angular end28toenter?- the socket -26 ofthe screwkbolt, andrrotating the .tool to-for'ce the point ofthe screw bolt l into the threaded. bore'39oi.the'nut mem# yber 38.

` Continued rotation of tool 27, either-by H96 y means of a head 3D oracra-nk 31in a clock- H wisev direction, will causethe'sash A to be`sdrawn inwardly to Ycompletely closed posi'- to hold thefsash in.tightlyelosed position.

tion and thereafter,YK the interengagement of y the screw bolt andsnutmember will servef-i i The: wrench. orf tool 27 may, ofcourse, be

withdrawn. and yremoved untilit isagain-Y required for rotating thescrewbolt. Y.

. The attenuated, end :24 of. the 'screwv ,bolt' is provided tofacilitate easy entrance r`ofthel .screw bolt to the bore of the nutmember.V

Y v Itis obvious thatone or Indre of the locking devices Vmaylbefemployed onA each 'sash fand the. number andlocationoftheselocking'` devices will bet governed by the sizevr andcondition ofthe sash. i It shouldibe noted 'that when the `srew ment in' the housing187 which movementfis limitedin 4one direction by engagement 4ofv thehead 25 with theA shoulder 22 andr inthe opposite directionf byengagementv with the against damage' tothe screw 'boltf org-to the nutmember, which might occur through slamming orlforcible" closureff'the'sash, causing these two membersto forcibly together.' "V

{vice is that it can Vbegin to 'operate before the sash is Vdrawnto.fully'closed positiomr in be `brought,r A i' "15'1120 i, One of theadvantages .ofthls lockmgA d@ e bolt 23 is not in engagement with'vk thenutv member 38, litisl capable of a sliding move-"filo 'Y i other words,it Vhas the function ofl pullingk l the sash to tightly closed position.and then? holding it theresecurely.v lt isobviousth'at anydesiredflength oi", draw, throughY opera-- tion of the screw bolt ,'canbeprovided by varyingthelengthofithe screw."

'i Thislockis Valso eiiicientu'n 'that it may bei-1 applied atboth theupper and lower portions of the sash to securely close and lock thesash, which may be warped or otherwise poorly formed or fitted. y

y Some changes may be made in the construction and arrangement of theparts of my device without departing from the real spirit and purpose ofmy invention, and it is my intention to cover by my claims, anymodiiiedforms of structure or use of mechanical equivalents, which maybe reasonably includ- V ed within their scope.

I claim as my invention:

1. A locking device for a easement sash, comprising a housing mounted onthe window jamb, a screw-bolt having a head arranged for rotation andfor sliding movement in the housing and also having a threaded nutmember carried by the `sash and adapted i `portion adapted to beprojected therefrom, a

keeper plate confined between the housing and window jamb and having aportion overlying one end of the housing to prevent removal of the screwbolt therefrom, and a ltoo engage the threaded portion of the screw olt.l

`2. A locking device for a sash mounted for movement relative to anothermember, comprising a housing mounted on said other member, ascrew boltloosely mounted in said housing, said housing being formed with alongitudinal recess on that face adjacent the said other member and alsoformed with a rabbet on that end remote from the movable sash, a keeperplate mounted in said recess and havinga iiange at one end overlying theY end of the housing to prevent removal of the bolt therefrom, said bolthavinga threaded `1 portionprojected'through said flange, said platebeing formed at its opposite end with a shortflange seated in saidrabbet to retain the plate relative to the housing, and a nut membercarried by the sash and adaptedto engage the threaded portion of thescrew l bolt. y y Des Moines, Iowa, February 8, 1929.

y y SERN MADSEN.

